Moses Lake, Washington · field elev 1,203 ft
Density Altitude at Moses Lake Municipal (W20)
Moses Lake Municipal sits at 1,203 ft, and even a typical July afternoon (90 °F) only lifts density altitude to about 3,433 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 30.1 | −449 ft | 36.4 | −12 ft |
| February | 35.3 | −87 ft | 44.1 | 514 ft |
| March | 43.3 | 460 ft | 54.9 | 1,234 ft |
| April | 50.5 | 943 ft | 63.7 | 1,807 ft |
| May | 59.5 | 1,535 ft | 73.7 | 2,444 ft |
| June | 66.2 | 1,968 ft | 80.4 | 2,863 ft |
| July | 73.4 | 2,425 ft | 89.7 | 3,433 ft |
| August | 72.2 | 2,350 ft | 88.3 | 3,348 ft |
| September | 62.8 | 1,749 ft | 78.7 | 2,757 ft |
| October | 49.9 | 903 ft | 62.8 | 1,749 ft |
| November | 37.6 | 71 ft | 46.3 | 662 ft |
| December | 29.9 | −463 ft | 36.2 | −25 ft |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for W20
DENSITY ALTITUDE
Field elevation 1,203 ft — the air behaves like 3,452 ft.
- PRESSURE ALT
- 1,204 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
Nearby Washington fields
- KMWH — Grant County International
Moses Lake · elev 1,189 ft
- 2S4 — Warden
Warden · elev 1,276 ft
- KEPH — Ephrata Municipal
Ephrata · elev 1,276 ft
- 5W1 — Wilson Creek
Wilson Creek · elev 1,430 ft
- S70 — Othello Municipal
Othello · elev 1,149 ft
- 80T — Quincy Municipal
Quincy · elev 1,271 ft
- 43D — Odessa Municipal
Odessa · elev 1,738 ft
- 0S0 — Lind
Lind · elev 1,507 ft
Frequently asked questions
How high does density altitude get at W20 in summer?
On a typical July afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Moses Lake Municipal reaches roughly 3,433 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at W20 on an average day?
It swings with the seasons: from roughly −463 ft at the coldest month's average temperature to about 2,425 ft at the warmest month's — all from a constant field elevation of 1,203 ft. The month-by-month table above carries the full year.
What is the field elevation of Moses Lake Municipal?
1,203 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is W20 (FAA), in Moses Lake, Washington.